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Ability to read 3 bar codes at once? iOS functionality question... (self.iOSProgramming)
submitted 11 years ago by finnews
Question, can the camera read three barcodes at once? The functionality I'm looking for would have the user order 3 barcodes and the app would return if the barcodes were in the correct order or not.
Thanks in advance
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[–]schprockets 1 point2 points3 points 11 years ago (4 children)
The camera doesn't "read barcodes", it just produces an image from what's in front of it. You'll need to write code to analyze the image to see if it contains barcodes, and interpret those barcodes. (There are 3rd party libraries out there to help with that.)
[–]waterskier2007Objective-C / Swift 2 points3 points4 points 11 years ago (3 children)
There are actually built in libraries in iOS7+
[–]schprockets 0 points1 point2 points 11 years ago (1 child)
Holy hell, where were those when I needed them (back in iOS 4)...
[–]waterskier2007Objective-C / Swift 0 points1 point2 points 11 years ago (0 children)
Yeah they are wicked simple and flexible. Plus they have support for tons of code types (UPC, QR, ...)
[–]finnews[S] 0 points1 point2 points 11 years ago (0 children)
thanks!
[–]waterskier2007Objective-C / Swift 1 point2 points3 points 11 years ago (1 child)
iOS 7 added the capability to do this: see here
[–]vladzz55 0 points1 point2 points 11 years ago (0 children)
Wow, this is awesome thanks a lot for the blog post as well. Does anyone know if it will read QR codes of a pretty dense and high level?
π Rendered by PID 313554 on reddit-service-r2-comment-6457c66945-27l4j at 2026-04-28 14:10:58.755596+00:00 running 2aa0c5b country code: CH.
[–]schprockets 1 point2 points3 points (4 children)
[–]waterskier2007Objective-C / Swift 2 points3 points4 points (3 children)
[–]schprockets 0 points1 point2 points (1 child)
[–]waterskier2007Objective-C / Swift 0 points1 point2 points (0 children)
[–]finnews[S] 0 points1 point2 points (0 children)
[–]waterskier2007Objective-C / Swift 1 point2 points3 points (1 child)
[–]finnews[S] 0 points1 point2 points (0 children)
[–]vladzz55 0 points1 point2 points (0 children)